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3 years ago

1 - (9 – 4) : 5 = Please someone help

Mathematics

1 answer:

Norma-Jean [14]3 years ago

3 0

Answer:

-4 = 5

Step-by-step explanation:

9-4=5

1-5=-4

-4:5

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if a school library has 86 fiction books and 74 nonfiction books, what is the percentage of nonfiction books?

hodyreva [135]

Answer:

46.25%

Step-by-step explanation:

First, add both numbers together. (86 + 74).

Next, we have 160. And that is 100%.

Now, we have to find what 74 is compared to 160.

74 is 46.25% of 160.

There's our answer.

3 0

3 years ago

Type the correct answer in the box. If necessary, use / for the fraction bar and simplify the fraction. cos(75°)cos(15°) =

diamong [38]

Answer:

1/4

Step-by-step explanation:

using the product-to sum formulas, this is

1/2 (cos(75+15) + cos(75-15))

5 0

3 years ago

Read 2 more answers

I am trying to find the equation of the following lines, i’m just having trouble putting them in slope-intercept form.

Margaret [11]

$\bf \begin{array}{ccccccccc}
&&x_1&&y_1\\
&&(~ -1 &,& -6~)
\end{array}
\\\\\\
slope = m\implies \cfrac{2}{5}
\\\\\\
\stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-(-6)=\cfrac{2}{5}[x-(-1)]
\\\\\\
y+6=\cfrac{2}{5}(x+1)\implies y+6=\cfrac{2}{5}x+\cfrac{2}{5}
\\\\\\
y=\cfrac{2}{5}x+\cfrac{2}{5}-6\implies y=\cfrac{2}{5}x-\cfrac{28}{5}$

$\bf \begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
&&(~ -2 &,& 5~) 
&&(~ 5 &,& 8~)
\end{array}
\\\\\\
slope = m\implies 
\cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{8-5}{5-(-2)}\implies \cfrac{8-5}{5+2}\implies \cfrac{3}{7}
\\\\\\
\stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-5=\cfrac{3}{7}[x-(-2)]
\\\\\\
y-5=\cfrac{3}{7}(x+2)\implies y-5=\cfrac{3}{7}x+\cfrac{6}{7}
\\\\\\
y=\cfrac{3}{7}x+\cfrac{6}{7}+5\implies y=\cfrac{3}{7}x+\cfrac{41}{7}$

7 0

3 years ago

What is the radius of a circle whose equation is (x 5)2 (y – 3)2 = 42?

jek_recluse [69]

Hello,

(x+5)²+(y-3)²=42

Center is (-5,3)
And radius= √42≠6.48074...

5 0

2 years ago

Read 2 more answers

In 2011, Americans used 1.86 x 1011

Snezhnost [94]

Answer:

In 2011, Americans used 1.86x10" kilowatt-hours to light their home kilowatt-hours to run their computers and computer equipment. Circle the number that correctly completes the statement

Step-by-step explanation:

hope this helped

4 0

2 years ago